Removed AnonymousUser object error

[Nandika-A]

Description

The changes are made in navbar.html file by checking if the user is not authenticated, he is directed to the login/signup page otherwise to the report page.

Related Issue

Fixes #62

Type of change

• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] This change requires a documentation update

Motivation and Context

Fixes the anonymous user error in report tab in navbar.

How Has This Been Tested?

Now the error is resolved.

Screenshots (if appropriate):

Checklist:

• [x] I have registered myself at Contrihub website.
• [x] My code follows the code style of this project.
• [ ] I have commented my code, particularly in hard-to-understand areas
• [x] My changes generate no new warnings
• [ ] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.
• [x] I have read the CONTRIBUTING document.
• [ ] Any dependent changes have been merged and published in downstream modules
• [ ] I have added tests to cover my changes.
• [x] All new and existing tests passed.

Test Configuration:

• Firmware version:
• Hardware:
• Toolchain:
• SDK: